CN221873113U

CN221873113U - Rubber screw structure

Info

Publication number: CN221873113U
Application number: CN202322835336.7U
Authority: CN
Inventors: 夏瑜键; 夏增富
Original assignee: ZHEJIANG HUAYE PLASTIC MACHINERY CO Ltd
Current assignee: ZHEJIANG HUAYE PLASTIC MACHINERY CO Ltd
Priority date: 2023-10-23
Filing date: 2023-10-23
Publication date: 2024-10-22
Anticipated expiration: 2033-10-23

Abstract

The utility model provides a rubber screw structure, includes the body of rod and sets up the screw edge on the body of rod, the screw edge includes feeding section, mixing section, ejection of compact section, mixing section divide into mixing one section, mixing two sections, mixing three sections and mixing four sections, mixing one section and mixing two sections are two screw edges, mixing three sections and mixing four sections are single screw edge, still are provided with supplementary screw edge on the body of rod that mixing two sections afterbody, mixing three sections and mixing four sections head correspond, and the screw edge height of supplementary screw edge is less than the height of screw edge, and the screw edge width of supplementary screw edge is greater than the width of screw edge, and the screw pitch of supplementary screw edge is greater than the screw pitch of mixing the section. The utility model has the advantages that: the change in the number of the screw edges can bring about the change in the advancing speed and the extrusion force of the materials; simultaneously, form new helicla flute between supplementary spiral shell arris and the former spiral shell arris, the material receives more extrusion shearing effect in the same distance, and liquid phase material can more evenly mix with solid phase material simultaneously, further promotes the mixing effect.

Description

Rubber screw structure

Technical Field

The utility model relates to the technical field of screw manufacturing, in particular to a rubber screw structure.

Background

The prior Chinese patent with the application number of CN202022649696.4 being a rubber processing screw discloses a rubber processing screw, which comprises a rod body and screw edges arranged on the rod body, wherein the screw edges are divided into a screw edge first section, a screw edge second section and a screw edge third section, the screw edge of the screw edge first section is a first screw edge perpendicular to the axial direction of the rod body, the rear side surface of the first screw edge is an inclined surface, the width of the root part of the first screw edge is larger than the width of the top part of the first screw edge, the screw edge of the screw edge second section is a variable-diameter screw edge with the outer diameter gradually reduced along the direction of the rod body, the angle between the variable-diameter screw edge and the axial direction of the rod body gradually reduced, and the screw edge third section is a constant-diameter screw edge with the outer diameter kept unchanged, and the included angle between the axial direction of the constant-diameter screw edge and the front section of the variable-diameter screw edge is the same as the included angle between the axial direction of the screw edge and the rod body. The utility model has the advantages that: the material extrusion is smooth, and the extrusion effect is good. However, the kneading segments of the screw have a single-flight structure, and the structure of kneading grooves formed between kneading flights is relatively simple, and there is room for improvement in the kneading effect, so that the structure of the screw needs to be further improved.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a rubber screw structure with ingenious design of mixing screw edges and good mixing effect aiming at the prior art.

The technical scheme adopted for solving the technical problems is as follows: this rubber screw structure, including the body of rod and the screw edge of setting on the body of rod, the screw edge includes feeding section, mixing section, ejection of compact section, its characterized in that: the mixing section is divided into a mixing section, a mixing section II, a mixing section III and a mixing section IV, the mixing section I and the mixing section II are double screw edges, the mixing section III and the mixing section IV are single screw edges, auxiliary screw edges are further arranged on rod bodies corresponding to the tail parts of the mixing section II, the mixing section III and the head parts of the mixing section IV, the screw edge heights of the auxiliary screw edges are smaller than the screw edge heights, the screw edge widths of the auxiliary screw edges are larger than the screw edge widths, and the screw pitches of the auxiliary screw edges are larger than the screw pitches of the mixing section.

As an improvement, the pitch of the first mixing stage may be preferably larger than the pitch of the third mixing stage, the pitch of the third mixing stage is larger than the pitch of the second mixing stage, and the pitch of the fourth mixing stage is larger than or equal to the pitch of the first mixing stage.

Further improvements, the pitch of the mixing four segments may preferably be equal to the pitch of the mixing one segment.

In a modification, the kneading auxiliary grooves preferably formed between the auxiliary ridges and the kneading blocks are eccentric spiral grooves.

As a modification, the feed section may preferably be a four-spiral flight.

Further improvements, the feed section may preferably comprise a first feed screw flight, a second feed screw flight, a third feed screw flight, and a fourth feed screw flight, wherein the first feed screw flight and the second feed screw flight are connected end to end with the screw flights of the mixing section, and the axial lengths of the third feed screw flight and the fourth feed screw flight are the same and shorter than the axial lengths of the first feed screw flight and the second feed screw flight. The feeding section is changed into double spiral edges at the tail part of the feeding section, and materials can enter the mixing section more smoothly.

As a modification, the discharge section may preferably be a double screw flight.

Further, the discharge section may preferably comprise a discharge first screw flight and a discharge second screw flight, the initial positions of which differ by 40 to 60mm in axial distance. The material can enter the discharging section more smoothly and can advance smoothly after entering.

As an improvement, a backflow blocking section can be preferably arranged at one end of the rod body, and a flow blocking groove is arranged on the surface of the backflow blocking section. Prevent that the material from flowing backward, it is safer to use.

Further improved, the flow blocking groove may preferably comprise a front spiral groove and a rear spiral groove.

Compared with the prior art, the utility model has the advantages that: the mixing section is divided into a mixing section one, a mixing section two, a mixing section three and a mixing section four, each section has the change in the number of screw edges, and the change in the number of screw edges can bring about the change in the advancing speed and extrusion force of materials, so that the mixing effect is improved; simultaneously, set up supplementary screw edge on the body of rod that two sections afterbody of mixing, three sections of mixing and four sections head of mixing correspond, the screw edge height of supplementary screw edge is less than the height of screw edge, and the screw edge width of supplementary screw edge is greater than the width of screw edge, the pitch of supplementary screw edge is greater than the pitch of mixing section, form new helicla flute between supplementary screw edge and the former screw edge, and this helicla flute width constantly changes, the front end of helicla flute can smoothly communicate each other with former screw edge groove simultaneously, the material receives more extrusion shearing effect in the same distance, liquid phase material can more evenly mix with solid phase material simultaneously, further promote the mixing effect.

Drawings

FIG. 1 is a perspective view of an embodiment of the present utility model;

FIG. 2 is a front perspective view of FIG. 1;

FIG. 3 is a cross-sectional view taken along line E-E of FIG. 2;

FIG. 4 is a cross-sectional view taken along line F-F in FIG. 2;

Fig. 5 is an enlarged view of the portion I in fig. 2.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 5, the rubber screw structure of the embodiment comprises a rod body 1 and screw edges arranged on the rod body 1, wherein the screw edges comprise a feeding section a, a mixing section B and a discharging section C, the mixing section B is divided into a mixing section B1, a mixing section B2, a mixing section B3 and a mixing section B4, the mixing section B1 and the mixing section B2 are double screw edges, the mixing section B3 and the mixing section B4 are single screw edges, auxiliary screw edges 15 are further arranged on the rod body 1 corresponding to the heads of the mixing section B2, the mixing section B3 and the mixing section B4, the screw edge height of the auxiliary screw edges 15 is smaller than the screw edge height, the screw edge width of the auxiliary screw edges 15 is larger than the screw edge width, and the screw pitch of the auxiliary screw edges 15 is larger than the screw pitch of the mixing section B. The screw pitch of the first mixing section B1 is larger than that of the third mixing section B3, the screw pitch of the third mixing section B3 is larger than that of the second mixing section B2, and the screw pitch of the fourth mixing section B4 is larger than or equal to that of the first mixing section B1. The pitch of the mixing four sections B4 is equal to the pitch of the mixing one section B1. The kneading auxiliary grooves 16 formed between the auxiliary flights 15 and the kneading blocks B are eccentric spiral grooves.

The feeding section A is a four-spiral edge. The feeding section A comprises a first feeding screw edge 11, a second feeding screw edge 12, a third feeding screw edge 13 and a fourth feeding screw edge 14, wherein the first feeding screw edge 11 and the second feeding screw edge 12 are connected with the screw edge head and tail of the mixing section B, and the axial lengths of the third feeding screw edge 13 and the fourth feeding screw edge 14 are the same and shorter than the axial lengths of the first feeding screw edge 11 and the second feeding screw edge 12.

The discharging section C is a double screw rib. The discharging section C comprises a discharging first screw rib 17 and a discharging second screw rib 18, and the axial distance between the initial positions of the discharging first screw rib 17 and the discharging second screw rib 18 is 40-60 mm.

A backflow blocking section D is arranged at one end of the rod body, and a flow blocking groove 19 is arranged on the surface of the backflow blocking section D. The choke groove 19 includes a front spiral groove and a rear spiral groove.

Claims

1. The utility model provides a rubber screw structure, includes body of rod (1) and sets up the spiral shell arris on body of rod (1), the spiral shell arris includes feeding section (A), mixing section (B), ejection of compact section (C), its characterized in that: the mixing section (B) is divided into a mixing section (B1), a mixing section (B2), a mixing section (B3) and a mixing section (B4), the mixing section (B1) and the mixing section (B2) are double screw edges, the mixing section (B3) and the mixing section (B4) are single screw edges, an auxiliary screw edge (15) is further arranged on a rod body (1) corresponding to the tail part of the mixing section (B2), the mixing section (B3) and the head part of the mixing section (B4), the screw edge height of the auxiliary screw edge (15) is smaller than the screw edge height, the screw edge width of the auxiliary screw edge (15) is larger than the screw edge width, and the screw pitch of the auxiliary screw edge (15) is larger than the screw pitch of the mixing section (B).

2. The rubber screw structure according to claim 1, wherein: the screw pitch of the first mixing section (B1) is larger than that of the third mixing section (B3), the screw pitch of the third mixing section (B3) is larger than that of the second mixing section (B2), and the screw pitch of the fourth mixing section (B4) is larger than or equal to that of the first mixing section (B1).

3. The rubber screw structure according to claim 2, wherein: the pitch of the mixing four stage (B4) is equal to the pitch of the mixing one stage (B1).

4. A rubber screw structure according to any one of claims 1 to 3, characterized in that: the auxiliary grooves (16) formed between the auxiliary screw flights (15) and the kneading section (B) are eccentric screw grooves.

5. A rubber screw structure according to any one of claims 1 to 3, characterized in that: the feeding section (A) is a four-spiral edge.

6. The rubber screw structure according to claim 5, wherein: the feeding section (A) comprises a feeding first screw rib (11), a feeding second screw rib (12), a feeding third screw rib (13) and a feeding fourth screw rib (14), wherein the feeding first screw rib (11) and the feeding second screw rib (12) are connected with the screw rib head and tail of the mixing section (B), and the axial lengths of the feeding third screw rib (13) and the feeding fourth screw rib (14) are the same and shorter than the axial lengths of the feeding first screw rib (11) and the feeding second screw rib (12).

7. A rubber screw structure according to any one of claims 1 to 3, characterized in that: the discharging section (C) is a double screw edge.

8. The rubber screw structure according to claim 7, wherein: the discharging section (C) comprises a discharging first screw rib (17) and a discharging second screw rib (18), and the axial distances of the initial positions of the discharging first screw rib (17) and the discharging second screw rib (18) are different by 40-60 mm.

9. A rubber screw structure according to any one of claims 1 to 3, characterized in that: one end of the rod body is provided with a backflow blocking section (D), and a flow blocking groove (19) is formed in the surface of the backflow blocking section (D).

10. The rubber screw structure according to claim 9, wherein: the choke groove (19) comprises a front spiral groove and a rear spiral groove.